KR100937835B1 - Coil treating apparatus for sound converter - Google Patents

Abstract

The present invention relates to a pretreatment apparatus capable of producing a pretreatment operation having a great influence on the lifespan and sound quality of a product during the manufacturing process of an acoustic transducer in an optimal state.

The present invention improves the accuracy of the pretreatment work of attaching the lead line of the coil portion attached to the diaphragm to the lower side of the diaphragm using the pretreatment device of the acoustic transducer, and standardizes the pretreatment work.

Description

Pretreatment device of acoustic converter {COIL TREATING APPARATUS FOR SOUND CONVERTER}

The present invention relates to a pretreatment value of an acoustic transducer for standardizing pretreatment operations during the manufacturing process of the acoustic transducer.

In general, an acoustic transducer includes a coil installed around a magnet in which a magnetic field is generated, and an electric signal is applied to the coil to move the coil by pushing or pulling the magnetic field and the magnetic field generated in the magnet to each other. It is a device that produces sound on the principle of generating sound pressure while vibrating diaphragm vibrates.

The magnetic circuits of these acoustic transducers are designed so that the magnetic flux can be bridged at right angles to the voice coil existing in the air gap by using a magnet (permanent magnet) and a top plate (or upper plate) in the yoke made of ferrous metal, respectively. The voice coil is bonded to the diaphragm to generate the up and down excitation force by the input signal to vibrate the diaphragm bound to the frame to generate sound pressure. The diaphragm has various wave shapes in order to remove the buckling phenomenon and the excellent response during the up and down oscillation. The shape of the diaphragm serves as a design variable that has the greatest influence on the frequency characteristics.

1 is a cross-sectional view of an acoustic transducer according to the prior art, and FIG. 2 is a state diagram of the diaphragm and the leader line according to the prior art.

As shown in FIG. 1, the acoustic transducer includes a frame 1, a yoke 2 inserted into and mounted on the inside of the frame 1, and a magnetic force is transmitted to or transmitted from the yoke 2. Inner ring top plate (5) receiving magnetic force from inner ring magnet (3) and outer ring magnet (4) and inner ring magnet (3) or outer ring magnet (4) to receive the magnetic force at right angles to coil portion (7) And a coil part 7 and a coil part in which a part of the outer ring top plate 6, the inner ring magnet 3 and the inner ring top plate 5, and the outer ring magnet 4 and the outer ring top plate 6 are inserted into a gap. (7) a diaphragm 8 which is attached to the inside and generates vibrations according to the vertical motion of the coil part 7 and a sound emitting hole 11 is formed of a protector 10 for protecting the diaphragm 8.

As shown in FIGS. 1 and 2, the lead wire 12 of the coil portion 7 is fixed to the bottom of the diaphragm 8 using a pretreatment bond, penetrating the side of the frame 1 or the frame. It is drawn out through a groove (not shown) formed in (1) and soldered to the terminal 14 along the outer side of the frame 1, respectively.

The lead line 12 pretreatment form of the coil part 7 includes the coil lead part 12a drawn out from the coil part 7, the reinforcement bonding part 12b closely bonded to the coil part 7, and the reinforcement bonding. Coil neck portion 12c at which part 12b ends and is spaced apart from the coil, pretreatment bonding portion 12d guided to the end of the diaphragm, and finally diaphragm edge 12e bonded to the end of diaphragm 8; ) Section.

The coil lead-out part 12a is a part in which one end and the other end of the coil are in contact with the coil after the coil is wound, and is fixed to the bond during pretreatment, and the lead line 12 is bent, and the bottom of the diaphragm 8 If there is a gap and the vibration plate 8 is vibrated in accordance with the vertical movement of the coil portion 7 may be in contact with the inner and outer ring top plate (5, 6) of the speaker, there should be no gap. In addition, in the case of a line of sight or a longitudinal line that is guided in a direction opposite to the coil winding direction, it is bent 180 degrees.

The reinforcing bonding part 12b is fixed to the coil neck part 12c so that when the coil lead-out part 12a is immediately spaced apart from the coil and attached, the disconnection is not made due to the fragility caused by the 180 ° bending of the line of sight or the vertical line. It is the part to be bonded in close contact with the angle coil.

The coil neck portion 12c is a starting portion where the lead line 12 is guided from the coil portion 7 to the diaphragm edge 12e portion, and the tangential angle with the coil so that the bending deformation of the coil is small when the diaphragm 8 vibrates up and down. Need to keep. In particular, disconnection of the coil frequently occurs in the coil neck portion 12c.

The leader line 12 starts to be spaced apart from the coil neck part 12c, passes through the pretreatment bonding part 12d, and is guided to the diaphragm edge 12e portion in a smooth curve shape. When the diaphragm 8 vibrates up and down, 12) is bonded with the bottom of the diaphragm 8 with an elastic bond so that no foreign sound occurs due to collision.

The portion of the diaphragm edge 12e has a lot of bending deformation to the outer portion of the diaphragm 8 so that the lead line 12 is connected to the terminal 14 portion.

The prior art formed as described above is a pretreatment operation in which a joining process of the lead wire 12 and the diaphragm 8 of the coil portion 7 fixes the lead wire 12 to the bottom surface of the diaphragm 8 with a pretreatment bond. Although high precision is required, it is made by hand and varies in form for each worker. The defect is not only frequently occurred, but also the process time is long and the cost is high. In addition, the pretreatment work of the lead wires 12 of the coil part 7 can be performed only by hand, so the accuracy is poor.

In order to solve this problem, an object of the present invention is to provide a pretreatment apparatus of an acoustic conversion apparatus that standardizes pretreatment operations having a great influence on the life and sound quality of a product.

The present invention provides a pretreatment apparatus of an acoustic transducer in which a coil part is mounted to generate a sound pressure, and the coil lead portion has a predetermined shape, wherein the jig base for fixing the position of the diaphragm is guided to form a lead wire. It provides a pre-processing device of the acoustic transducer, comprising a jig plate.

In another aspect, the present invention provides a pre-processing device of the sound conversion apparatus comprising a connecting member for separating the jig base and the jig plate after guiding the shape of the leader line.

In addition, the present invention provides a pre-treatment apparatus, characterized in that the jig base is provided with a diaphragm guide according to the shape of the diaphragm.

In addition, the present invention provides a pre-processing device of the sound conversion apparatus, characterized in that the jig plate has a diaphragm pressing portion for pressing and fixing a portion of the diaphragm, and a leader line guide portion for guiding the leader line shape.

In addition, the present invention, the lead wire guide portion of the jig plate, the lead line fixing portion for fixing the coil lead-out portion of the coil portion, the coil seat portion having a shape corresponding to the coil portion shape, and a lead having a shape corresponding to the desired lead wire shape Provided is a pretreatment apparatus of an acoustic transducer, characterized in that it comprises a sunguide protrusion.

In addition, the present invention is manufactured by a pre-treatment device, the coil neck portion of the lead wire lead-out angle (A) is 0 ~ 30 degrees, the lead wire vibration plate separation angle (B) of the vibration plate edge of the range of 10 to 30 degrees. It provides a sound conversion device characterized in that it has.

The present invention has the advantage of stabilizing the sound output characteristics through the standardization of the pretreatment work of the diaphragm and the coil unit by using the pretreatment device, and at the same time, greatly reducing the error of each of the electro-acoustic conversion devices manufactured by the uniform pretreatment work. .

In addition, there is an advantage that the pre-treatment device can shorten the pre-treatment time by standardizing the pre-treatment work.

In addition, since the accuracy of the pretreatment operation is increased by using the pretreatment device, there is an advantage that the reliability of the acoustic transducer can be improved.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view of the pretreatment apparatus according to the present invention, Figure 4 is a front exploded perspective view of the pretreatment apparatus according to the present invention. Fig. 5A is a side view of the jig plate of the processing apparatus of the acoustic transducer according to the present invention, and Fig. 5B is a plan view of the jig plate of the pretreatment apparatus according to the present invention.

3 and 4, the pre-processing apparatus 100 according to the present invention is a jig base 110 for fixing the position of the diaphragm 200 is attached to the coil, the diaphragm 200 is fixed to the leader line It comprises a jig plate 130 having a leader line guide portion 131 for guiding the shape of the 221, and a connecting member 120 for connecting the jig base 110 and the jig plate 130.

Jig base 110 has a diaphragm guide 111 to form a groove according to the shape of the diaphragm 200, the diaphragm guide 111 is a diaphragm so that the diaphragm 200 can be positioned in the pretreatment device 100. It is formed in the same shape as the outer (200), it is formed to guide the portion that is not disturbed when shaping the leader line 221.

The connection member 120 is configured to facilitate the discharge of the diaphragm 200 after the pretreatment work, and uses a kind of leaf spring, and is attached to the jig plate 130 and the jig base 110 by double-sided tape so that one side is a jig plate ( 130 is connected to the lift and the other side is connected to the jig base 110.

As shown in FIGS. 5A and 5B, the leader line 131 guides the shape of the leader line to the jig plate 130 and the diaphragm press part 132 presses and fixes the vibration plate 200. The pretreatment form of the line 221 is a structure that is exposed to the upper side so that the coating can be applied to the coil lead-out portion (221a) drawn from the coil and the reinforcing bonding portion (221b) bonded in close contact with the coil portion 220.

The leader line guide part 131 of the jig plate 130 has a lead selection part 131a for fixing the coil lead part 221a of the coil part 220, and a coil seating part according to the shape of the coil part 220 ( 131b is formed, the shape of the leader line 221 of the pretreatment bonding portion 221d guided to the end of the coil neck portion 221c and the diaphragm 200 which are spaced apart from the coil after the reinforcing bonding portion 221b ends. A leader line protrusion 131c having a shape is formed.

The diaphragm presser 132 of the jig plate 130 is configured to protrude to closely contact the diaphragm 200 with the bottom, and a diaphragm press cushion such as a foam member is attached to prevent the soft diaphragm 200 from being damaged.

6A to 6C are graphs showing pretreatment operations using the pretreatment apparatus according to the present invention.

6A illustrates that the diaphragm 200 to which the coil part 220 is attached is seated on the diaphragm guide part 111 of the jig base 110 by using the pretreatment device 100. It is fixed.

6B illustrates that the diaphragm pressing part 132 is pressed against the bottom by pressing the jig plate 130 spaced by the diaphragm 200 fixed to the jig base 110 and the connecting member 120. Secure it so it doesn't move.

6C is a bonding operation in which a part of the diaphragm 200 on which the coil unit 220 is mounted is fixed by the jig base 110 and the jig plate 130 to form a leader line 221 of the coil unit 220. Proceed. In more detail, the coil part 220 is seated on the coil seat 131b having a shape corresponding to the shape of the coil part 220 of the leader line guide 131, and the coil lead part 221a of the leader line 221. ) Is fixed by the lead selection part 131a of the leader line guide part 131, and the reinforcing bonding part 221b which bonds the leader line 221 from the coil lead part 221a to the coil neck part 221a is Next, the lead wire 221 is guided from the coil neck portion 221c to the end of the diaphragm 200 by the leader wire guide protrusion 131c to complete the shape of the lead wire.

Of course, the lead wires 221 spaced apart from the coil neck portion 221c are completed by the lead wire guide protrusion 131c, and then bonded to the bottom of the diaphragm 200 to the diaphragm edge 221e portion, thereby preliminary bonding ( 221d is formed, and when the diaphragm edge 221e of the lead wire 221 is bonded to the diaphragm 200, the pretreatment device 100 is removed, and then the lead wire 221 and the diaphragm 200 are coated with a pretreatment bond. Complete the preprocessing work by fixing. In particular, since coil disconnection occurs frequently in the coil neck portion 221c.

The lead wire 221 of the coil part 220 is spaced apart from the coil neck portion 221c and is configured in a straight line shape, but the lead wire 221 guided to the vibration plate edge 221e part is configured to have a curved shape, and the vibration plate The 200 is bonded to the bottom surface of the diaphragm 200 with a stretchable bond so that the foreign material does not collide with the leader line 221 during vertical vibration.

7 is a state diagram of the diaphragm and the leader line according to the present invention. The leader line protrusion 131 (shown in FIG. 3) of the jig plate 130 (shown in FIG. 3) constituting the pretreatment device 100 (shown in FIG. 3) has a leader line 221. The separation angle is configured to maintain 0 to 30 degrees, and the leader line diaphragm separation angle (B) where the leader line 221 meets the outside of the diaphragm 200 is configured to achieve 10 to 30 degrees.

8 is a graph showing the stress according to the distance of the leader line of the acoustic transducer according to the present invention. Up and down vibration of the diaphragm 200 is attached to the diaphragm 200 with the coil unit 220 according to the present invention, and the lead line 221 of the coil unit 220 on the lower side to the diaphragm 200. Due to this is a graph of an experiment for finding the shape of the leader line 221 that can effectively distribute the bending and tensile load received by the leader line 221.

Lead-out angle (A) Lead line diaphragm separation angle (B) type 1 60 degrees About 24 degrees type 2 70 degrees About 34 degrees type 3 80 degrees About 44 degrees type 4 90 degrees About 54 degrees type 5 10 degrees About 64 degrees type 6 20 degrees About 74 degrees

The stress for the distance from 0mm to 2mm of type 1,2,3 is very high. The stress related to the distance of 0 mm to 2 mm relates to the leader line drawing angle A, and the range of the leader line drawing angle A of types 1,2 and 3 is 60 to 90 degrees. However, it can be seen that the stress on the distance from 8mm to 12mm of type 1,2,3 is very low. The distance in the range of 8mm to 12mm is related to the lead-line diaphragm separation angle (B), and the stress of 8mm to 12mm of types 1,2 and 3 is low, and the type 1 has the lowest stress, so the type 1 lead wire The diaphragm separation angle B is most suitable.

The stress on the distance of 0mm to 2mm of the type 4,5,6 is the stress on the lead-out angle (A) and the average is less than 60, and the range of the lead-out angle (A) of the type 4,5,6 is It can be seen that 0 to 30 degrees, among which the stress on the lead-out angle (A) of the type 6 is the lowest. However, the stress on the lead line diaphragm separation angle (B) of type 4,5,6 is higher than that of type 1,2,3, indicating that the lead line diaphragm separation angle (B) of type 4,5,6 is not appropriate. Can be.

Based on the above experimental results, the stress is the lowest at 0 degrees to 30 degrees at 0 mm to 2 mm, and the lowest at 10 degrees to 30 degrees at 8 mm to 12 mm, according to the present invention. It is preferable that the extraction angle A is formed at 0 degrees to 30 degrees, and the lead line diaphragm separation angle B is formed at 10 degrees to 30 degrees, and the overall stress change rate is lower than that of the prior art.

The lead line 221 of the coil unit 220 according to the prior art has a high stress according to the lead line lead-out angle (A) with a stress of 70 or more between 0 mm and 2 mm, and the change rate of stress in other sections is also large. As a result, it was necessary to have a leader line shape that minimizes stress.

The lead line 221 of the coil unit 220 has a specific lead line lead angle A and a lead line diaphragm separation angle B by the line processing apparatus 100 of the acoustic transducer according to the present invention. The leader line guide part 131 of the jig plate 130 constituting the pretreatment apparatus 100 helps to form a specific leader line lead angle A and a leader line diaphragm separation angle B. Particularly, the lead-out lead angle A is fixed at 0 to 30 degrees by the straight line of the lead-out guide protrusion 131c constituting the lead-out guide portion 131, and the end of the lead-out guide protrusion 131c is curved. The lead line diaphragm separation angle (B) is formed to correspond to the shape of the leader line 10 to 30 degrees to be formed.

In addition, the diaphragm edge 221e portion of the leader line 221 has a lot of bending deformation to the outer portion of the diaphragm 200 to be connected to the terminal (not shown) portion, but to the diaphragm 200 through the preprocessing device 100. The time of the process of adhering the leader line 221 can be shortened.

After the pretreatment of the lead wire 221 of the diaphragm 200 and the coil unit 220 according to the present invention is completed, and the assembly and completion of the acoustic conversion device are completed, the lead wire 221 and the vibration plate ( 200 can be confirmed, the uniformity of the manufacturing work by the pre-treatment device 100 can be reduced to reduce the defects of the pre-treatment work, while stabilizing the sound output characteristics through uniform adhesion, while manufacturing through uniform adhesion It is possible to significantly reduce the characteristic error of each of the acoustic transducers, and to reduce the occurrence of defects.

1 is a cross-sectional view of an acoustic transducer according to the prior art.

2 is a state diagram of the diaphragm and the leader line according to the prior art.

3 is a perspective view of a pretreatment apparatus of an acoustic transducer according to the present invention.

4 is a front exploded perspective view of the pretreatment apparatus according to the present invention.

Figure 5a is a side view of the jig plate of the pretreatment apparatus according to the present invention.

5B is a plan view of a jig plate of the pretreatment apparatus according to the present invention.

6A to 6C are graphs showing pretreatment operations using the pretreatment apparatus according to the present invention.

7 is a state diagram of the diaphragm and the leader line according to the present invention.

8 is a graph showing the stress according to the distance of the leader line of the acoustic transducer according to the present invention.

Claims (7)

In the pre-processing device of the sound conversion device so that the lead line of the coil portion mounted on the diaphragm has a certain shape, A jig base for fixing the diaphragm on which the coil unit is mounted; And a jig plate for guiding the shape of the leader line over the diaphragm. The method of claim 1, And a connecting member spaced apart from the jig base and the jig plate after guiding the shape of the leader line. The method of claim 1, The jig base has a diaphragm guide according to the shape of the diaphragm. The method of claim 1, The jig plate has a diaphragm pressing portion for pressing and fixing a portion of the diaphragm, and a leader line guide portion for guiding the shape of the leader line. The method of claim 4, wherein The lead wire guide part of the jig plate is composed of a lead-out fixing part for fixing the coil lead-out part of the coil part, a coil seat part having a shape corresponding to the coil part shape, and a lead wire guide protrusion having a shape corresponding to the desired lead wire shape. And a pre-processing device for an acoustic transducer. An acoustic conversion device manufactured by the pretreatment device according to any one of claims 1 to 5. The coil neck portion lead-out lead angle A of the coil part is 0 to 30 degrees, and the lead line diaphragm separation angle B of the diaphragm edge portion has a range of 10 to 30 degrees. Acoustic transducer.

Images